嵌入式TCP-IP协议栈应用主机端程序（VC6源码）.rar_TCP stack_dosdef.h ether3c.c_tcp_

/* Scratch Protocol for 'TCP/IP Lean' (c) Iosoft Ltd. 2000 This software is only licensed for distribution with the book 'TCP/IP Lean', and may only be used for personal experimentation by the purchaser of that book, on condition that this copyright notice is retained. For commercial licensing, contact license@iosoft.co.uk This is experimental software; use it entirely at your own risk. The author offers no warranties of any kind, including its fitness for purpose. */ /* ** v0.01 JPB 28/10/99 ** v0.02 JPB 1/11/99 Removed 'flags' from packet format ** v0.03 JPB 2/11/99 Reintroduced sequencing flags ** v0.04 JPB 3/11/99 Added SLIP support ** v0.05 JPB 4/11/99 Added config-file support ** v0.06 JPB 5/11/99 Revamped packet driver to support multiple classes ** v0.07 JPB 8/1/99 Updated packet format to use command string ** v0.08 JPB 8/1/99 Adapted Tx, Rx so txlen and rxlen include header length ** v0.09 JPB 9/11/99 Added sequencing ** v0.10 JPB 9/11/99 Added data queues ** v0.11 JPB 11/11/99 Improved sequence logic ** v0.12 JPB 12/11/99 Added circular buffer option to packet driver ** v0.13 JPB 15/11/99 Added network Tx and Rx circular buffers ** v0.14 JPB 16/11/99 Improved support for direct-drive of NE2000 card ** v0.15 JPB 16/11/99 Added SCRATCHE for use with DJGPP compiler ** v0.16 JPB 17/11/99 Fixed reentrancy problem on receive ** v0.17 JPB 18/11/99 Removed references to min() and max() ** v0.18 JPB 19/11/99 Completely revamped state machine ** v0.19 JPB 22/11/99 Added timeouts ** v0.20 JPB 23/11/99 Added WIN32 support ** v0.21 JPB 25/11/99 Fixed SLIP interface ** v0.22 JPB 26/11/99 Improved SCRATCHP state-machine ** v0.23 JPB 29/11/99 Added 'dir' command ** v0.24 JPB 30/11/99 Added 'get' and 'put' ** v0.25 JPB 1/12/99 Promoted 'seq' and 'ack' to 32-bit values ** v0.26 JPB 6/12/99 Added 3COM driver ** v0.27 JPB 30/12/99 Improved DJGPP compatibility - removed MAXPATH definition ** v0.28 JPB 6/4/00 Updated to use latest version of net drivers ** v0.29 JPB 13/8/00 Updated copyright notice */ #define VERSION "0.29" /* This software version */ #include <stdio.h> #include <stdlib.h> #include <conio.h> #include <ctype.h> #include <string.h> /* Override the default circular buffer size used in TCPFS.H */ #define _CBUFFLEN_ 0x1000 /* Circ buffer size: MUST be power of 2 */ #include "ether.h" #include "netutil.h" #include "net.h" #include "scratchp.h" #define SCRATCHPVER 1 /* Protocol version number */ #define TESTLEN SCRATCHPDLEN /* Max size of 1 block of test data */ #define TESTBUFFLEN (TESTLEN*2) /* Size of test data buffer */ #define TESTINC 1 /* Increment value for test data */ #define CFGFILE "tcplean.cfg" /* Default config filename */ #define NDIAGS 40 /* Number of diagnostic header entries */ #define DIAG_TX 1 /* Identifiers for diagnostic Tx, Rx hdrs */ #define DIAG_RX 2 #define ERRTIME 2 /* Error timeout in sec */ #define RETRIES 2 /* Number of error retries */ #define BLOCKLEN 255 /* Len of file xfer blk (excl. len byte) */ #define FILENAMELEN 40 /* Max length of get/put filename */ char cfgfile[MAXPATH+5]=CFGFILE; /* Config filename */ BYTE testdata[TESTBUFFLEN]; /* Test data buffer */ LWORD testlen; int txoff, rxoff; /* Tx, Rx offsets into test data */ GENFRAME genframe; /* Receive/transmit frame */ long txcount; /* Count of Rx bytes */ CBUFF txbuff={_CBUFFLEN_}; /* Circular buffer for transmit */ CBUFF rxbuff={_CBUFFLEN_}; /* Circular buffer for receive */ int statedebug, pktdebug, sigdebug; /* Flags to enable diagnostic printout */ char locid[IDLEN+1]; /* My (local) ident string */ char remid[IDLEN+1]; /* Remote node ident string */ BYTE remaddr[MACLEN]; /* Remote node address */ extern BYTE bcast[MACLEN]; /* Broadcast address */ char netcfg[40]; /* Network config string */ int connstate; /* Network connection state */ int appstate; /* Application state */ char *connstates[]={STATENAMES}; /* Strings for connection states */ char *appstates[]={APPNAMES}; /* Diagnostic strings for states */ char *signames[] = {SIGNAMES}; BYTE apptemp[TESTLEN+1]; /* Temporary storage for app. data */ SCRATCHPHDR diaghdrs[NDIAGS]; /* Diagnostic storage of SCRATCHP headers */ int diagidx; /* Index into dignostic storage */ char kbuff[81]; /* Keyboard buffer */ WORD errtimer, errcount; /* Timer & counter for errors */ char *offon[] = {"off", "on"}; /* Off/on strings */ FILE *fhandle; /* File handle for GET and PUT */ char filename[FILENAMELEN+1]; /* File name for GET and PUT */ long filelen; /* File length for GET and PUT */ int breakflag; /* Flag to indicate ctrl-break pressed */ /* Prototypes */ int get_pkts(GENFRAME *nfp); void prompt_user(void); int do_scratchp(GENFRAME *nfp, int rxlen, int signal); int do_apps(CBUFF *rxb, CBUFF *txb, int sig); int do_dir(CBUFF *txb); void newconnstate(int state); void newappstate(int state); void disp_sig(int sig); int make_scratchp(GENFRAME *nfp, BYTE *dest, char *cmd, BYTE flags, void *data, int dlen); int make_scratchpds(GENFRAME *nfp, BYTE *dest, char *cmd, BYTE flags, char *str); int put_scratchp(GENFRAME *nfp, WORD txlen); int is_scratchp(GENFRAME *nfp, int len); int swap_scratchp(GENFRAME *nfp); void disp_scratchphdr(SCRATCHPHDR *sph); void disp_scratchp(GENFRAME *nfp); void dump_diags(void); int read_cfg(char *fname); int mygets(char *buff, int maxlen); int main(int argc, char *argv[]) { char k, cmdkey=0; int i, keysig, connsig, sstep=0; WORD frametype, txlen=0; GENFRAME *nfp; printf("SCRATCHP v" VERSION " "); /* Sign on */ if (!read_cfg(argc>1 ? argv[1] : 0)) /* Read config file */ { printf("ERROR: invalid configuration file\n"); exit(1); } printf("\n"); /* Make random test data */ for (i=0; i<TESTLEN; i++) testdata[i] = testdata[i+TESTLEN] = (BYTE)rand()&0xff; nfp = &genframe; /* Open net driver.. */ nfp->g.dtype = frametype = open_net(netcfg); /* ..get frame type */ if (!frametype) { printf("ERROR: can't open network driver\n"); exit(1); } else { newappstate(STATE_IDLE); /* Set default states */ newconnstate(APP_IDLE); timeout(&errtimer, 0); /* Refresh timeout timer */ while (!breakflag && cmdkey!='Q') /* Main command loop.. */ { txlen = keysig = connsig = 0; prompt_user(); /* Prompt user on state change */ if (sstep || kbhit()) /* If single-step or keypress..*/ { k = getch(); /* ..get key */ if (sstep) timeout(&errtimer, 0); /* If single-step, refresh timer */ cmdkey = toupper(k); /* Decode keystrokes.. */ switch (cmdkey) /* ..and generate signals */ { case 'I': /* 'I': broadcast ident */ if (connstate != STATE_CONNECTED) printf("Broadcast ident request\n"); keysig = SIG_USER_IDENT; break; case 'O': /* 'O': open connection */ printf("Open connection: remote ident (RETURN if a